Java，手动throw exception和error有什么区别？

Question

示例代码如下

                if (input.length != 2) {
                    logger.error("The input for execute " + component.toString() + " is not right!");
                    throw new Exception("hehehe");
                }

及

                if (input.length != 2) {
                    logger.error("The input for execute " + component.toString() + " is not right!");
                    throw new Error("hehehe");
                }

Answer 1

Exception:

1． Can be controlled (checked) or uncontrollable (unchecked).
2. Indicates an error caused by the programmer.
3. Should be handled at the application level.

Error:

1． Always unchecked.
2. Often used to indicate 系统错误或底层资源 errors.
3. Whenever possible, it should be caught at the system level.

Answer 2

I remember it seems that it will never be used in your programthrow error